Effect Of Breakup On Elastic Scattering For The Li6,7+co59 Systems

The elastic scattering for the Li6,7+Co59 systems was investigated in the bombarding energy range 12MeV≤Elab≤30MeV by means of an analysis using the São Paulo potential, through which the behavior of the real and imaginary parts as function of the bombarding energy was established. The experimental results suggest that overall there is an evidence of the usual threshold anomaly for both systems, although for the Li6+Co59 system, an evidence of the breakup threshold anomaly could also be questioned. © 2007 The American Physical Society.754Dasgupta, M., (1998) Annu. Rev. Nucl. Part. Sci., 48, p. 402. , ARPSDF 0163-8998 10.1146/annurev.nucl.48.1.401Rowley, N., (1991) Phys. Lett., 254, p. 25. , PYLBAJ 0370-2693 10.1016/0370-2693(91)90389-8Balantekin, A.B., Takigawa, N., (1998) Rev. Mod. Phys., 70, p. 77. , RMPHAT 0034-6861 10.1103/RevModPhys.70.77Al-Khalili, J., Nunes, F., (2003) J. Phys. G, 29, p. 89. , JPGPED 0954-3899 10.1088/0954-3899/29/11/R01Dasgupta, M., Hinde, D.J., Rowley, N., Stefanini, A.M., (1998) Annu. Rev. Nucl. Part. Sci., 48, p. 401. , ARPSDF 0163-8998 10.1146/annurev.nucl.48.1.401Canto, L.F., Gomes, P.R.S., Donangelo, R., Hussein, M.S., (2006) Phys. Rep., 424, p. 1. , PRPLCM 0370-1573 10.1016/j.physrep.2005.10.006Takahashi, J., (1997) Phys. Rev. Lett., 78, p. 30. , PRLTAO 0031-9007 10.1103/PhysRevLett.78.30Kolata, J.J., (1998) Phys. Rev. Lett., 81, p. 4580. , PRLTAO 0031-9007 10.1103/PhysRevLett.81.4580Aguilera, E.F., (2000) Phys. Rev. Lett., 84, p. 5058. , PRLTAO 0031-9007 10.1103/PhysRevLett.84.5058Trotta, M., (2000) Phys. Rev. Lett., 84, p. 2342. , PRLTAO 0031-9007 10.1103/PhysRevLett.84.2342Raabe, R., (2004) Nature, 431, p. 823. , 1476-4687 10.1038/nature02984Yoshida, A., (1996) Phys. Lett., 389, p. 457. , PYLBAJ 0370-2693 10.1016/S0370-2693(96)01327-5Rehm, K.E., (1998) Phys. Rev. Lett., 81, p. 3341. , PRLTAO 0031-9007 10.1103/PhysRevLett.81.3341Smith, M.S., Rehm, K.E., (2001) Annu. Rev. Nucl. Part. Sci., 51, p. 91. , ARPSDF 0163-8998 10.1146/annurev.nucl.51.101701.132430Dasgupta, M., (1999) Phys. Rev. Lett., 82, p. 1395. , PRLTAO 0031-9007 10.1103/PhysRevLett.82.1395Marti, G.V., (2005) Phys. Rev. C, 71, p. 027602. , PRVCAN 0556-2813 10.1103/PhysRevC.71.027602Pakou, A., (2006) Phys. Lett., 633, p. 691. , PYLBAJ 0370-2693 10.1016/j.physletb.2005.11.088Takigawa, N., Sagawa, H., (1991) Phys. Lett., 265, p. 23. , PYLBAJ 0370-2693 10.1016/0370-2693(91)90007-DHagino, K., Vitturi, A., Dasso, C.H., Lenzi, S.M., (2000) Phys. Rev. C, 61, p. 037602. , PRVCAN 0556-2813 10.1103/PhysRevC.61.037602Diaz-Torres, A., Thompson, I.J., Beck, C., (2003) Phys. Rev. C, 68, p. 044607. , PRVCAN 0556-2813 10.1103/PhysRevC.68.044607Satchler, G.R., (1991) Phys. Rep., 199, p. 147. , PRPLCM 0370-1573 10.1016/0370-1573(91)90066-USatchler, G.R., Love, W., (1979) Phys. Rep., 55, p. 183. , PRPLCM 0370-1573 10.1016/0370-1573(79)90081-4Nagarajan, M.A., Mahaux, C.C., Satchler, G.R., (1985) Phys. Rev. Lett., 54, p. 1136. , PRLTAO 0031-9007 10.1103/PhysRevLett.54.1136Hinde, D.J., Dasgupta, M., Fulton, B.R., Morton, C.R., Wooliscroft, R.J., Berriman, A.C., Hagino, K., (2002) Phys. Rev. Lett., 89, p. 272701. , PRLTAO 0031-9007 10.1103/PhysRevLett.89.272701Wu, Y.W., (2003) Phys. Rev. C, 68, p. 044605. , PRVCAN 0556-2813 10.1103/PhysRevC.68.044605Keeley, N., (1994) Nucl. Phys., 571, p. 326. , NUPABL 0375-9474 10.1016/0375-9474(94)90064-7Pakou, A., (2003) Phys. Lett., 556, p. 21. , PYLBAJ 0370-2693 10.1016/S0370-2693(03)00079-0Hussein, M.S., Gomes, P.R.S., Lubian, J., Chamon, L.C., (2006) Phys. Rev. C, 73, p. 044610. , PRVCAN 0556-2813 10.1103/PhysRevC.73.044610Chamon, L.C., Pereira, D., Hussein, M.S., (1998) Phys. Rev. C, 58, p. 576. , PRVCAN 0556-2813 10.1103/PhysRevC.58.576De Moura, M.M., (2001) Nucl. Instrum. Methods Phys. Res. A, 471, p. 368. , NIMAER 0168-9002 10.1016/S0168-9002(01)00800-2Alvarez, M.A.G., (2003) Nucl. Phys., 723, p. 93. , NUPABL 0375-9474 10.1016/S0375-9474(03)01158-8Chamon, L.C., (2002) Phys. Rev. C, 66, p. 014610. , PRVCAN 0556-2813 10.1103/PhysRevC.66.014610Pakou, A., (2003) Phys. Rev. Lett., 90, p. 202701. , PRLTAO 0031-9007 10.1103/PhysRevLett.90.202701Pakou, A., (2004) Phys. Rev. C, 69, p. 054602. , PRVCAN 0556-2813 10.1103/PhysRevC.69.054602Gomes, P.R.S., (2005) J. Phys. G, 31, p. 1669. , JPGPED 0954-3899 10.1088/0954-3899/31/10/051Moraes, S.B., (2000) Phys. Rev. C, 61, p. 064608. , PRVCAN 0556-2813 10.1103/PhysRevC.61.064608Signorini, C., (2002) Eur. Phys. J. A, 13, p. 129. , EPJAFV 1434-6001 10.1007/s10050-002-8731-

Structure Effects In The Elastic Scattering For The 16o + 46,50ti Systems

Nuclear structure effects observed in the sub-Coulomb fusion of heavy-ions demand a careful investigation of the reaction cross section and optical potentials near the Coulomb barrier. The elastic scattering for the 16O + 46,50Ti systems was investigated in the bombarding energy range 30 ≤ Elab ≤ 70   MeV through an analysis using the São Paulo Potential. Experimental results suggest that there is no significant effect due to the differences in structure of the deformed 46Ti and the neutron magic 50Ti targets. This result is in agreement with the observation of no significant structure effects in the fusion cross section study for the same systems. © 2006 Elsevier B.V. All rights reserved.78103/04/15342349Dasgupta, M., Hinde, D.J., (1998) Annu. Rev. Nucl. Part. Sci., 48, p. 401Steadman, S.G., Rhoades-Brown, M.J., (1986) Annu. Rev. Nucl. Part. Sci., 36, p. 649. , and references thereinBeckerman, M., (1988) Rep. Prog. Phys., 51, p. 1047Krappe, H.J., Möhring, K., Nemes, M.C., Rossner, H., (1983) Z. Phys. A, 314, p. 23Balantekin, A.B., Takigawa, N., (1998) Rev. Mod. Phys., 70, p. 77Dasgupta, M., (1998) Annu. Rev. Nucl. Part. Sci., 48, p. 401Canto, L.F., (2006) Phys. Rep., 424, p. 1Vaz, L.C., Alexander, J.M., Satchler, G.R., (1981) Phys. Rep., 69, p. 373Balantekin, A.B., Koonin, S.E., Negele, J.W., (1983) Phys. Rev. C, 28, p. 1565Stewart, T.L., (1996) Nucl. Phys. A, 611, p. 332Reisdorf, W., (1997) Nucl. Phys. A, 614, p. 112Wu, Y.W., (2003) Phys. Rev. C, 68, p. 44605Rowley, N., Satchler, G.R., Stelson, P.H., (1991) Phys. Lett. B, 254, p. 25Satchler, G.R., (1991) Phys. Rep., 199, p. 147Satchler, G.R., Love, W., (1979) Phys. Rep., 55, p. 183Hussein, M.S., (2006) Phys. Rev. C, 73, p. 044610Figueira, J.M., (2006) Phys. Rev. C, 73, p. 054603Nagarajan, M.A., Mahaux, C.C., Satchler, G.R., (1985) Phys. Rev. Lett., 54, p. 1136Chamon, L.C., Pereira, D., Hussein, M.S., (1998) Phys. Rev. C, 58, p. 576Liguori Neto, R., (1990) Nucl. Phys. A, 512, p. 333Alvarez, M.A.G., (2003) Nucl. Phys. A, 723, p. 93Chamon, L.C., (2002) Phys. Rev. C, 66, p. 014610Di Gregorio, D.E., (1986) Phys. Lett. B, 176, p. 322Di Gregorio, D.E., (1989) Phys. Rev. C, 39, p. 51

Erratum To: "structure Effects In The Elastic Scattering For The 16o + 46,50ti Systems" [nucl. Phys. A 781 (2007) 342] (doi:10.1016/j.nuclphysa.2006.11.034)

[No abstract available]79403/04/15231232Dasgupta, M., Hinde, D.J., Rowley, N., Stefanini, A.M., (1998) Annu. Rev. Nucl. Part. Sci., 48, p. 401Gomes, P.R.S., Anjos, R.M., Muri, C., Lubian, J., Padron, I., Chamon, L.C., Liguori Neto, R., Abriola, D., (2004) Phys. Rev. C, 70, p. 05460

Diversidade genética entre acessos de cacau de fazendas e de banco de germoplasma na Bahia Genetic diversity among farm and germplasm bank accessions of cacao in Bahia, Brazil

O objetivo deste trabalho foi avaliar a diversidade genética de acessos de cacau, selecionados previamente como produtivos e resistentes à vassoura-de-bruxa na Bahia, e estudar suas inter-relações com genótipos no banco de germoplasma. Amostras de DNA de folhas dos 120 acessos, coletados em 17 fazendas de sete municípios do Sul da Bahia, foram amplificadas pela técnica de RAPD ("random amplified polymorphic DNA"). Os coeficientes de dissimilaridade genética, calculados pelo método de Jaccard a partir das bandas RAPD, permitiram evidenciar, pela análise de agrupamento, que a maioria das seleções das fazendas (89,2%) agrupou-se com acessos do banco de germoplasma considerados representativos da diversidade de cacau (híbridos, trinitários, Scavinas, amazônicos e cacau-comum). As demais seleções distribuíram-se em outros sete grupos distintos. Há elevada diversidade genética entre as seleções das fazendas, e algumas delas devem ter-se originado de genitores não incluídos nesta análise. Esses materiais apresentam potencial para seleção de clones com maior diversidade para novos cruzamentos ou uso pelos agricultores.<br>The objective of this work was to assess genetic diversity of farm cacao accessions, previously selected as productive and resistant to witch broom in Bahia, Brazil, and to study their interrelationship with reference genotypes on germplasm bank. DNA samples from 120 cacao accessions, collected on 17 farms in seven counties in Southern Bahia, were amplified by RAPD technique (random amplified polymorphic DNA). The coefficients of genetic dissimilarity, calculated from the RAPD bands by Jaccard method, allowed to show by cluster analysis that most farm selections (89.2%) grouped with accessions from germplasm bank considered representatives of the cacao genetic diversity (hybrids, Trinitarian, Scavina, Amazon and common cacao). The other selections were distributed in seven distinct groups. There is high genetic diversity among farm selections, and some of them may have originated from other progenitors not included in this analysis. These materials present potential for clone selection with higher diversity for new crossings or direct use by agriculturists

Water stress before harvest of pepper-rosmarin

The objective of this work was to assess the effect of different periods of water stress before harvest of pepper-rosmarin (Lippia sidoides) on the contents of essential oil and flavonoids. The experiment was carried out during 270 days of cultivation, with drainage lysimeters, in a completely randomized block design with five treatments: 0, 2, 4, 6, and 8 days of water suppression before harvest, with four replicates. Fresh and dry matter yield, essential oil content, total flavonoids content, and water potential and temperature of leaves were determined. There was a decrease of approximately 50% in oil content and of 60% in total flavonoid content with the reduction of leaf water potential in 0.3 MPa. Essential oil is more sensitive to water stress than total flavonoids